Water-jet marker for torpedoes.



G. P" HELPRIOH.

WATER JET MARKER FOR TORPEDOES.

APPLIGATIOK FILED FEB.16,1910,

Patented June 13, 1911.

I/VI/ENTOR GUSTAV f. HELFBICH, OF NEW YORK, N. Y.

WATER-JET MARKER FOR TO'RPEDOES.

Specification of Letters Patent.

hatented June 13, ilfiitii.

Application filed February 16, 1910. Serial No. 5%,189.

T 0 all whom it may concern:

Be it known that I, GUSTAV P. Hammett, a citizen of the United States, and a resident of the borough of Bronx, county, city, and State of New York, have invented certain new and useful lVatenJet Markers for Torpedoes, set forth in the following specification.

This invention relates to submarine boats and its object is to mark the location of a submarine boat by novel method so that the mark cannot be destroyed by gun fire and to provide suitable means for the practicing of this method.

The method of marking the locality of the submarine boat contemplated is that of forming an elevation in the water directly over the locality of the submerged boat. To cause this elevation in the water, the applicant contemplates discharging from the boat either continuously or at intervals an upwardly directed blast or jet of fluid.

In the preferred embodiment of the invention the applicant provides a force pump having a suitable intake conduit and an upwardly discharging conduit for forcing a jet of water upwardly from the submerged boat and above the surface of the submerging water. More artieularly it is an object to combine sue means for marking location in a submarine torpedo boat which is arranged to be externally controlled.

The invention will be clearly understood from the following specification and will be more fullypointed out in the accompanying claims.

The specification should be read in connec:

tion with the accompanying drawings, which form a part of this application and in which,- I

Figure l is a view of a body of water showing a submerged torpedo boat in vertical elevation and partly in diagram; and Fig. 2 is a fragmentary sectional elevation showing a modification.

In its preferred embodiment the inven tion is combined, as illustrated, with a torpedo boat construction.

The hull is indicated provided approved manner as b by 1 and is shown the electric motor 3.

4 indicates the ru der and 5 the con-v trolling motor for the same.

In this type of submarine boat, it is common to provide a reel 6 having wound therewith a propeller 2 driven in any on a sutlicient length of multi-conductor cable 7 which unwinds with the progress of the boat and passes out through a water sealing guide 8. This cable supplies the elec tric current f 1' operating the motors 3 and 5, it being understood that external control of these motors is effected in a well known manner but which forms no part of this invention. It is also well known that a multiconductor cable such as that shown is employed for many other purposes besides supplying current for the driving of the motors and'the steering of the boat. It is likewise serviceable in providing connection for all external apparatus with any of the usual indicating apparatus to be carried by a boat of this class, such as a depth indicator. An intake conduit 9 having its intake opening preferably forwardly directed connects with the force pump 10 in. a suitable manner to supply water thereto, which is forced by the pump 10 through the discharge conduit 11 upwardly directed and opening into the sub merging water 12.

In Fig. 1 the conduit 11 is shown terminating flush with the outer surface of the hull 1, although it may be provided with an upward extension 13 of any desired length as shown in Fig. 2. An electric motor 1% is connected by suitable means, shown in the form of a belt 15, to drive the force pump It}. The motor 14 receives its current from suitable leads 16 and 17 connected. respectively to the leads 18 and 19 for motor In Fig. 2 the lead '17 is shown. provided with a normally open circuit closer 20 inter mittently closed at suitable interva cam 21 driven from the propeller any suitable manner, as by means 0;: belt 23. l

For the apparatus as shown in '1, it is to be understood that the pump 1'3 is constantly driven by the 1 r 14: to cause'an eleva mn or 9 Jove the gem eral surface of the submt sing water This elevation or of 'w serves marker to indicate that the torpedo boat directly beneath the same. it has the novel the surface of the Water at intervals which should be suificiently frequentto en' able the general course of the torpedo to be determined by the person who may be controlling its progress from some external lo: cality such as a war ship.

It is to be understood that the means illustrated for practicing this invention are merely illustrative'and to show a preferred embodiment, although it is well understood that the invention is not limited to the ill strative embodiment shown. I

What isclaimed and What is desired to be secured by United States Letters Patent submarine boats comprising, an upwardly directed conduit and means for ejecting fluid therefrom to provide a visible elevation in the water at the surface over the boat to serve as a visible marker.

2. l\ Ieans for indicating the location of tently ejecting fluid therefrom to provide a visible elevation ,in the water at the surface over the boat to serve as a visible marker.

3. Means for indicating the location of submarine boats comprising, an upwardly directed discharge conduit; an intake con- 1. Means for indicating the location of 7 pump connected with said a motor for operating said pump to eject water from said discharge conduit and form a visible jet abovevthe surface of the submerging body of Water to mark the location of said boat.

4. hieans for indicating the location of submarine boats comprising, an upwardly directed discharge conduit; an intake conduit; a force pump connected with said conduits; a motor for operating said pump to eject water from said discharge conduit and form a visible jet above the surface of the submerging body of water to mark the location of said boat; and means for causing the operation of said motor to be intermittent;

5. In an externally controlled submarine torpedo boat, means f destructible location marker comp'rlsing, an

; a force mics; and

HANsEnMANN, J. ALTMAN. 

